[Bug]: IPAddress::getInterfaceBroadcastAddress is unimplemented on Windows, breaking NetworkServiceDiscovery::Advertiser

[MariaGraziaCorino]

Detailed steps on how to reproduce the bug

Create an advertiser in any JUCE app:

juce::NetworkServiceDiscovery::Advertiser advertiser { "_test._udp", "TestService",
41111, 42113,
juce::RelativeTime::seconds (1.5) };

Nothing is ever broadcast. A UDP listener bound to port 41111, on the same machine or on another host on the same subnet, receives zero datagrams, and no error or assertion is raised. The same code on macOS advertises normally.

The cause is in modules/juce_core/native/juce_Network_windows.cpp:

IPAddress IPAddress::getInterfaceBroadcastAddress (const IPAddress&)
{
// TODO
return {};
}

What is the expected behaviour?

The advertiser broadcasts its announcement on each interface's broadcast address, so listeners on the subnet discover the service.

Operating systems

Windows

What versions of the operating systems?

Windows 11

Architectures

x86_64

Stacktrace

Plug-in formats (if applicable)

No response

Plug-in host applications (DAWs) (if applicable)

No response

Testing on the develop branch

I have not tested against the develop branch

Code of Conduct

• I agree to follow the Code of Conduct